Macro Assembler versus "Computer Intro!" Assembler for Odyssey2

First, lets look at the Macro Assembler "Hello World"

  cpu   8048              ; using the Intel 8048 CPU
  org   400h
  include "g7000.h"       ; common developer header
  jmp   myinit            ; go directly to myinit and skip start screen
  jmp   irq
  jmp   timer             ; required to have here, but not to use
  jmp   vsyncirq
  jmp   start             ; start of the app code 
  jmp   soundirq

myinit
  call init

timer
                          ; not used

start
  call gfxoff             ; turn off graphics mode while we paint
  mov r0,#vdc_char0       ; using #0 of the graphic character set
  mov r3,#20h             ; set the x
  mov r4,#20h             ; set the y
  mov r2,#0Bh             ; set to 11 characters long
  mov r1,#hellostr & 0FFh ; point to the string we will read 0FF is the terminator

loop
 mov a,r1                 ; move character into the accumulator
 movp a,@a                ; memory move the accumulator
 mov r5,a                 ; put the accumulator into register 5 where the call 
                          ; to vdc_char0 is stored to display
 inc r1                   ; ready for next character
 mov r6,#col_chr_white    ; register 6 is where vdc_char0 looks for color
 call printchar           ; display character
 djnz r2,loop             ; is register 2 in loop at 11 yet, if not continue loop
 call gfxon               ; turn on graphics mode
 
 stop
  jmp   stop

hellostr
  db   1Dh, 12h, 0Eh, 0Eh, 17h, 0Ch
  db   11h, 17h, 13h, 0Eh, 1Ah

Now lets look at "Computer Intro!" Assembler for Odyssey²

00 6B LDV.B.00       ;Load display register B with position 00
01 00
02 60 LDV.0.00       ;load register 0 with NULL
03 00
04 6C LDV.C.12       ;Load data space register C with step 12
05 12
06 09 MOV            ;Move data space to accumulator
07 30 BEQ.0.24       ;If NULL goto end
08 24
09 0B OTA            ;Display accumulator
10 12 GTO.06         ;go back to move at step 06   
11 06
12 1D                ;H  Start of data space
13 12                ;E
14 0E                ;L
15 0E                ;L
16 17                ;O
17 0C                ;space
18 11                ;W 
19 17                ;O
20 13                ;R
21 0E                ;L
22 1A                ;D
23 00                ;NULL  end of string
24 00 NOP            ;No operation, just a place to land

Both Hello Worlds have major differences while working mostly the same and using the same character set.